In it he says that if God asked you to sacrifice your son, he trusts you’d be moral enough to not do it.
This book is wrong! God asks Abraham to sacrifice Isaac, Abraham’s son. (Genesis 22:1-2)
“After these things God decided to test Abraham’s faith. God said to him, “Abraham!” And he said, “Yes!” Then God said, “Take your son to the land of Moriah and kill your son there as a sacrifice for me. This must be Isaac, your only son, the one you love. Use him as a burnt offering on one of the mountains there. I will tell you which mountain.”
Genesis 22:9-10
“When they came to the place where God told them to go, Abraham built an altar. He carefully laid the wood on the altar. Then he tied up his son Isaac and laid him on the altar on top of the wood. Then Abraham reached for his knife to kill his son.”
But God did not ultimately want this, He was testing Abraham’s faith. (Genesis 22:11-12)
But the angel of the Lord stopped him. The angel called from heaven and said, “Abraham, Abraham!” Abraham answered, “Yes?” The angel said, “Don’t kill your son or hurt him in any way. Now I can see that you do respect and obey God. I see that you are ready to kill your son, your only son, for me.”
Genesis 22:15-18
You were ready to kill your only son for me. Since you did this for me, I make you this promise: I, the Lord, promise that I will surely bless you and give you as many descendants as the stars in the sky. There will be as many people as sand on the seashore. And your people will live in cities that they will take from their enemies. Every nation on the earth will be blessed through your descendants. I will do this because you obeyed me.”